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9966 [12]
3 years ago
11

Which of the following does a rigid motion preserve?

Mathematics
2 answers:
marusya05 [52]3 years ago
7 0

Answer:

c

Step-by-step explanation:

Blababa [14]3 years ago
5 0
The answer is C because it moved figures to a new location without changing its size and shape. Hope this helps.
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Find the unit rate of 3÷12​
yKpoI14uk [10]

Answer:

1/4

Step-by-step explanation:

3/12

Simplify. Both numbers can be divided by 3.

3/12 = 1/4

8 0
3 years ago
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It takes 1/5 a cup of flour to make one small pizza. How many small pizzas could be 7/10 made with
Anit [1.1K]

Answer:

3 1/2 small pizzas

Step-by-step explanation:

1/5 = 1 pizza

7/10 = x pizza

7/10 = 3.5/5

3.5/5 = 3.5 pizzas

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3 years ago
Write the equation for a parabola with a focus at (-8, -1) and a directrix at y = − 4.
Sidana [21]

Answer:

y = 1/6 x^2 + 8/3 x + 49/6

Step-by-step explanation:

This is a parabola which opens upwards.

The distance of a point (x, y)  from the focus is

√[(x -  -8)^2  + (y - -1)^2] and

the distance of the point from the line y = -4

= y - -4

These distances are equal for a parabola so:

√[(x -  -8)^2  + (y - -1)^2] = y + 4

Squaring both sides:

(x + 8)^2 + (y + 1)^2  = (y + 4)^2

x^2 + 16x + 64 + y^2 + 2y + 1 = y^2 + 8y + 16

x^2 + 16x + 64 + 1 - 16 = 8y - 2y

6y = x^2 + 16x + 49

y = 1/6 x^2 + 8/3 x + 49/6 is the equation of the parabola.

4 0
3 years ago
An eraser is in the shape of a triangular prism. Its dimensions are shown in the diagram. What is surface area of the
Colt1911 [192]

Answer:

6000 square millimeters

Step-by-step explanation:

Side length of the slanting side can be calculated using the Pythagorean theorem,

L = sqrt(30^2+40^2) = 50

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= surface area of the end sections + the surface area of the three side faces

= 2*(30*40/2) + 40*(30+40+50)

= 1200 + 4800

= 6000 mm^2

4 0
3 years ago
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Which angle number represents <EHK
kotegsom [21]
Angle #8 represents angle EHK
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3 years ago
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